California is surprising to me. Where do them bulk of liberal whites without college degrees live? Certainly some areas of the northern coast fall into this category but I wouldn’t think of working class whites in socal being leftwing.
Lots of people still move to SoCal in hopes of getting into acting or entertainment. Many entertainment-related professions don't require a degree. Even though most of them end up doing other things, the type of person who "sets off to Hollywood to make it big and become a star" typically has a personality that lends itself to a liberal or left-wing worldview.
